Abstract
Position Index (P), the spatial sensitivity factor used in the determination of the index of sensation for a source, is not unambiguously defined for all directions in the visual field. The working definition is a set of curves indicating contours of constant position index. Numerical values have been tabulated for the standard room tables of visual comfort probability (VCP) and serve as a precise definition for a limited number of directions in the visual field. It is desirable to define the position index by a functional relation over the entire field of view. Here, four analytic representations are considered in terms of spatial coverage, errors with respect to known representations, simplicity, and the like.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have